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NShan12's avatar
NShan12
Icon for Occasional Contributor rankOccasional Contributor
5 years ago

Modelsim Error: (vsim-3555) Identifier is not a unit name for the physical type

Hello, I am a newbie in verifying complex FPGA designs. In my testbench, I am reading the test vectors from a text file and assigning them to the input ports of my FPGA design. Thats when I find ...
sstrell's avatar
sstrell
Icon for Super Contributor rankSuper Contributor
5 years ago

What library/package are you using to do this? You don't show that part of your code. A typical setup would be:

LIBRARY ieee;

USE STD.TEXTIO.ALL;

USE ieee.std_logic_1164.ALL;

USE ieee.std_logic_textio.ALL;

and I don't see that you've set up a file handle:

FILE vectorfile: TEXT OPEN READ_MODE IS "input_vectors.txt";

And if you're using TEXTIO, you don't need to read the spaces. They're skipped automatically.